Piston for an internal combustion engine
US-9765728-B2 · Sep 19, 2017 · US
Piston with enhanced cooling gallery
US8955486B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8955486-B2 |
| Application number | US-201213370609-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 10, 2012 |
| Priority date | Feb 10, 2012 |
| Publication date | Feb 17, 2015 |
| Grant date | Feb 17, 2015 |
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Abstract
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A piston for an internal combustion engine has a body including an upper combustion wall having an upper combustion surface; cylindrical outer wall with a ring belt region adjacent the upper combustion surface, and a closed annular cooling gallery located in radial alignment with the ring belt region. A cooling medium is contained in the cooling gallery. The cooling gallery has an inner surface including a radially outermost portion extending along the ring belt region. The outermost portion converges from the upper combustion wall toward a longitudinal central axis. During reciprocating motion of the piston, the cooling medium flows and remains in contact with the cooling gallery walls, thereby maximizing the capacity for heat to be transferred from the upper combustion wall to the contained cooling medium and from the cooling medium to the piston body, ring belt region and ultimately to the engine cooling system.
First claim
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What is claimed is: 1. A piston for an internal combustion engine, comprising: a body extending along a longitudinal central axis, said body including an upper combustion wall having an upper combustion surface, a cylindrical outer wall with a ring belt region adjacent said upper combustion surface, a pair of pin bosses beneath said upper combustion wall; a closed annular cooling gallery located radially inwardly from said ring belt region; a cooling medium contained in said c…
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- F02F3/18Primary
Mechanical Engineering · mapped topic
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- What does patent US8955486B2 cover?
- A piston for an internal combustion engine has a body including an upper combustion wall having an upper combustion surface; cylindrical outer wall with a ring belt region adjacent the upper combustion surface, and a closed annular cooling gallery located in radial alignment with the ring belt region. A cooling medium is contained in the cooling gallery. The cooling gallery has an inner surface…
- Who is the assignee on this patent?
- Azevedo Miguel, Lineton Warran Boyd, Hampton Keith, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification F02F3/18. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Feb 17 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).